XML 77 R40.htm IDEA: XBRL DOCUMENT v3.19.3
Prepaid Expenses and Other Assets - Summary of Prepaid Expenses and Other Assets (Detail) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Prepaid Expense and Other Assets [Abstract]    
Prepaid expenses $ 5,385 $ 3,390
Revenues in excess of billings 4,850 7,987
Contract retainage 2,426 2,469
Income tax receivable 291 471
Other 302 1,245
Total prepaid expenses and other assets $ 13,254 $ 15,562